Interior electric-conduit box.



No. 689,139. I Patented Dec. I7Q I90I.

- J. H. STAI'ILEY.

INTERIOR ELECTRIC CUNDUI T BOX (Application ma Oct. 30, 1901.

ZSheets-Sheet I.

(No Model.)

- A @i /M af-lioulmr I 1r: :3 mm. wu'umm'on,

No. 689,139; Patented Dec. I7, I90]; J. u. STAHLEY.

INTERIOR ELECTRIC connun' Box. i g limin al a Oct. 30, 1901.

(No lodgl.) 2 Sheets-$heat 2.

N own/kw 19% .To all whmn it may concern;

' UNITED STATES PATENT OFFIC JOHN H. sTAnLEY, or NEW YORK, N.Y.

INTERIOR E'LECTRIC-CONDUIT cox.

SPEGIEICATIGN formingpart of Letters PatentNo. 689,139, dated December 17, 1901.

Application filed October 30, 1901. Serial No. 80,557. (No model.)

Be it known that I, JOHN H. STAHLEY, acitizen of the United States, and a resident of the borough of Manhattan, city of New York, State of New York, have invented certain new and useful Improvements in'lnt'erior Electric- Conduit- Boxes, of which the following is a specification.

In another application filed by me September 20, 1901, Serial No. 75,698, I have shown an improved construction of conduit-boxes (or box-covers) for light-fixtures, switches,

sockets, &c., in which an axially and angularly adjustable sleeve seated in the opening of the box-cover is held in adjusted position by clamping-screws working in tapped apertures in the curb surrounding the opening and impinging against the sleeve. The present invention constitutes an improvement upon such boxes and comprises a means for more positively, supporting or holding the sleeve.

In'the accompanying drawings, Figure 1 is a plan, and Fig. 2 a longitudinal section, of an outlet-box for a light-fixture. Fig. 3 is a plan, and Fig. 4 a longitudinal section, showing a modified construction of such a box; Fig. 5, a plan, and Fig. 6 a longitudinal section, showing another modification; Fig. 7, a plan, and Fig. 8 a longitudinal section, showing still another modification; Fig. 9, a plan, and Fig. 10 a longitudinal section, showing a switch-box constructed in accordance with my invention.

In all the views the box A, the sides and back of which may be of any appropriate construction, has a cover with an opening therein surrounded by a curb B. A sleeve 0, preferably slightly tapered and having a flange c at its outer end, is seated in the opening, so as to be capable of in and out and angular or rocking adjustment and is clamped in any adjusted position by screws D, working in tapped apertures in the curb B. Thepurpose of this construction is to permit symmetrical arrangement of the end of the sleeve relatively to the wall or surface in which the box is set. The purpose of the present invention is to provide means for more positively or certainly preventing displacement of the sleeve when once properly adjusted.

In Figs. 1 to 8 a threaded fixture-stud E is carried by a bridge extending across the inner end of the sleeve. The bridge construction may be as variously shown in my said application, but is preferably as indicated in the drawings, wherein lugs F, projecting diametrically from opposite sides of the inner end of the sleeve, are formed with apertures to receive threadedscrews or bolts f, by which the plate or bracket 6, carrying the threaded stud E, may be attached. In Figs. 1 and 2 a ceiling-box for a light-fixture is indicated. It is supported and clamped between an outside nut G and an inside cap g, both working on the threadedend of a pipe or rod G. A headed bolt g, passing through an aperture in the cap g, extends through thehollow stud E and has a small nut applied to its threaded end, below which the bolt ends or is cut oil. In Figs. 3and4 the box is indicated as supportedbylateralductsorpipesH. Headed bolts g, extending through openings in the bottom or back of the box, pass, through apertures in the parts F F and have nuts 9 applied to them. The box, as shown in Figs. 5 and 6, may be considered as located in a wall or ceiling and appropriately supported in any way. A cross piece or bar K, placed over-or across an opening 70 in the back, has attached or hinged to it a threaded bolt is, that passes through the hollow stud E and has a nut q applied to its end. Figs. 7 and 8 show bolts g extending through the back wall of the box and through apertures in the parts F and plate or bracket e. Nuts g are applied to the outer ends of the bolts and nutsZ inside the parts F, so that not only is the sleeve supported, but the stud E is also clamped to the ears F.

Figs. 9 and 10 show a switch-box ot the general construction already described. M is the switch-block, fitting within the rectangular sleeve 0, and M its front plate, to be secured to the sleeve by screws entering the tapped bosses m. Here the sleeve is rectangular in cross-section and at diagonally opposite inner corners has inwardly-projecting ears or lugs N, apertured to receive bolts g, extending from the back plate. Nuts g and Z are applied, respectively, on opposite sides of the lugs N.

In the several constructions illustrated the bolts and nuts are manipulated to suit the desired adjustment of the sleeve, and then the clamping-screws are tightened. Strains tending to withdraw the sleeve from the box are positively resisted by the bolts 9 The ears or lugs F and fixture-stud attached thereto form a bridge-piece extending between the sides of the sleeve and into or through which the supporting-bolts g orf pass.

The invention may no doubt be embodied in other forms; but the mode of support herein shown is deemed to be practical and efficient.

To prevent positively inward movement of the sleeve-washers, wedges or blocks may, if desired, be placed between the curb B and flange c of the sleeve. In Figs. 4 and 8 the bolts 9 are seated in the ordinary tapped apertures formed in the backs of existing styles of boxes for attachment thereto of the fixturestud plate 6.

I claim as my invention- 1. An interior conduit-box having a cover with an opening therein combined with a sleeve adjustable axially and angularly within the opening, logs on the sleeve projecting inwardly, and a threaded fixture-stud secured to the lugs.

2. An interior conduit-box having a cover with an opening therein, combined with a sleeve adjustable axially and angularly within the opening, a fixture-stud carried by the sleeve,and a bolt supporting the sleeve mounted in the back wall of the box.

3. An interior conduit-box having a cover with an opening therein surrounded bya curb or flange, combined with a sleeve adjustable axially and angular-1y within the opening, clamping-screws passing through the curb and impinging against the sleeve, and a bolt supporting the sleeve and mounted in the back wall of the box.

4. An interior conduit-box having a cover with an opening therein surrounded bya curb or flange, combined with a sleeve adjustable axially and angularly within the opening, a fixture-stud carried by the sleeve, clampingscrews passing through the curb and impinging against the sleeve, and a bolt supporting the sleeve and mounted in the back wall of the box.

5. An interiorconduit-box having an opening, a sleeve axially and angularly adjustable therein, clamping-screws adapted toimpinge against the sides of the sleeve, and a sleevesupporting bolt extending between the sleeve and the back of the box.

6. An interior conduit-box having a cover with an opening therein, combined with a sleeve adjustable axially and an gularl y within the opening, a fixture-stud carried by the sleeve, and means for positively preventing outward movement of the sleeve when finally adjusted.

7. An interior conduit-box having a cover with an opening therein surrounded bya curb or flange, combined with a sleeve adjustable axially and angularly within the opening, clam ping-screws passing through the curb, and impinging against the sleeve, and means for positively preventing outward movement of the sleeve when finally adjusted.

8. An interior conduit-box having a cover with an opening therein surrounded by a curb or flange, combined with a sleeve adjustable axially and angularly within the opening, a fixture-stud carried by the sleeve, clampingscrews passing through the curb andv impinging against the sleeve, and means for positively preventing outward movement of the sleeve when finally adjusted.

9. An interior conduit-box having an opening, a sleeve axially and angularly adjustable therein, clamping-screws adapted to impinge against the sides of the sleeve, and means for positively supporting the sleeve against outward movement when finally adjusted.

10. An interior conduit-box having a cover with an opening therein, a sleeve axially and angularly adjustable within the opening, a bridge extending across the sleeve and comprising a hollow fixture-stud, and a supporting-bolt extending from the rear of the box and passing through the hollow sleeve.

11. An interior electric-conduit-box cover having an opening therein, a sleeve axially and angularly adjustable within the opening, a bridge extending across the sleeve and comprising a fixture-stud and an aperture in the bridge adapted to receive a bolt for supporting the sleeve.

12. An interior electric-conduit-box cover having an opening therein, a sleeve axially and angularly adjustable in the opening, and a bridge extending across the sleeve and comprising a hollow fixture-stud through which a supporting-bolt may be passed.

13. An interior electric-conduit-box cover having an opening surrounded by a flange or curb, a sleeve axially and angularly adjustable in the opening, clamping-screws extending through the curb and impinging against the sleeve, and a hollow fixture-stud carried by the sleeve and through which a sleeve-supporting bolt may pass.

In testimony whereof I have hereunto subscribed my name.

JOHN H. STAHLEY.

Witnesses:

KATHARINE MAcMAHoN, EDWARD O. DAVIDSON.

IIO 

